| 起源于籼稻体细胞培养的联会消失变异的细胞遗传学研究 |
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| 引用本文： | 凌定厚,陈梅芳,陈琬瑛,马镇荣.起源于籼稻体细胞培养的联会消失变异的细胞遗传学研究[J].遗传学报,1988(2). |
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| 作者姓名： | 凌定厚 陈梅芳 陈琬瑛 马镇荣 |
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| 作者单位： | 中国科学院华南植物研究所 广州
(凌定厚，陈梅芳，陈琬瑛)，中国科学院华南植物研究所 广州(马镇荣) |
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| 摘 要： | 对表现不育的体细胞培养再生植株作减数分裂细胞遗传学分析发现,一株由IR54幼穗外植体起源的不育株(二倍体)为部分联会消失变异。其减数分裂早前期染色体配对正常,在终变期及中期Ⅰ观察到了数目不等的单价染色体,后期Ⅰ出现各种数目的落后染色体。由于减数分裂时染色体不平衡而导致该再生植株不育。
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| 关 键 词： | 体细胞无性系变异 部分联会消失 籼稻 体细胞培养 |
The Cytogenetic Research on Desynaptic Variation of Somaclone from Somatic Cell Culture of Indica Rice |
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| Ling Dinghou Chen Meifang Chen Wanying Ma Zhenrong.The Cytogenetic Research on Desynaptic Variation of Somaclone from Somatic Cell Culture of Indica Rice[J].Journal of Genetics and Genomics,1988(2). |
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| Authors: | Ling Dinghou Chen Meifang Chen Wanying Ma Zhenrong |
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| Abstract: | Among the regenerated plants from somatic cell culture of IR54,one sterile plant with seed setting frequency 2.34% was found to be a partial desynapsis mutant.The chromosome paring in early prophase of meiosis was normal.Various numbers of univalents in,and laggards diakinesis and metaphase I in anaphase I were observed respectively.The maximum number of laggards in an anaphase cell was 10.In the metaphase I the normal chromosome paring (1211) was only making up 17.7% of all cells observed.The imbalance of chromosome distribution in the meiosis resulted in the sterility of the regenerated plant. |
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| Keywords: | Somaclonal variation Partial desynapsis Indica rice Somatic cell culture |
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